Peng Zheng-Song, Martinek Petr, Kosuge Kazumasa, Kuboyama Tsutomu, Watanabe Nobuyoshi
China West Normal University, Nanchong, Sichuan, China.
J Appl Genet. 2008;49(2):135-9. doi: 10.1007/BF03195606.
A common wheat (Triticum aestivum L.) mutation that produces 3 pistils (TP) per floret may result in formation of up to 3 kernels per floret. The TP trait may be important for increasing the number of grains per spike and for improving the yield potential through breeding. This trait is determined by the dominant Pis1 gene. Genetic mapping of Pis1 involved 234 microsatellite markers and bulk segregant analysis of a cross of the TP line with Novosibirskaya 67. The Pis1 gene is located on chromosome 2DL, between markers Xgwm539 and Xgwm349. This result does not agree with a previously published localization of the Pis1 gene on chromosome 5B. The possible importance of TP wheat as an alternative genetic resource is discussed.
一种普通小麦（Triticum aestivum L.）突变体，其每朵小花产生3个雌蕊（TP），可能导致每朵小花形成多达3粒种子。TP性状对于增加每穗粒数以及通过育种提高产量潜力可能很重要。该性状由显性Pis1基因决定。Pis1的遗传定位涉及234个微卫星标记以及TP品系与新西伯利亚67杂交的混合分离群体分析。Pis1基因位于2DL染色体上，在标记Xgwm539和Xgwm349之间。这一结果与之前发表的Pis1基因定位在5B染色体上不一致。文中讨论了TP小麦作为一种替代遗传资源的潜在重要性。
